在 Ubuntu 20.04 上运行 Tor 浏览器会产生以下输出：
$ torbrowser-launcher
Tor Browser Launcher
By Micah Lee, licensed under MIT
version 0.3.2
https://github.com/micahflee/torbrowser-launcher
Downloading Tor Browser for the first time.
Downloading https://aus1.torproject.org/torbrowser/update_3/release/Linux_x86_64-gcc3/x/en-US
Latest version: 10.0
Downloading https://dist.torproject.org/torbrowser/10.0/tor-browser-linux64-10.0_en-US.tar.xz.asc
Downloading https://dist.torproject.org/torbrowser/10.0/tor-browser-linux64-10.0_en-US.tar.xz
Verifying Signature
Refreshing local keyring...
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/torbrowser_launcher/launcher.py", line 589, in verify
c.verify(signature=sig, signed_data=signed)
File "/usr/lib/python3/dist-packages/gpg/core.py", line 541, in verify
raise errors.BadSignatures(results[1], results=results)
gpg.errors.BadSignatures: 110775B5D101FB36BC6C911BEB774491D9FF06E2: Key expired
During handling of the above exception, another exception occurred:
Traceback (most recent call …